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Statistics
Statistics deals with collecting, organizing, and interpreting numerical data. An important aspect of statistics is the analysis of population characteristics inferred from sampling.
36,755 Questions
Probabilities can never be negative. A probability distribution is defined as follows:
- Every event has a probability of occurring between 0 and 1, inclusive.
- The sum of the probabilities of each event occurring is 1.
4*6+1
You are an 8-digit number the digit in the thousands place is the result of dividing 64 by 8?
No, the digit in that position will arise from a whole range of possibilities. If N is a (integer) number taken at random then the number in the thousands place could be anything equally. In particular, if you divide 88888888 by 8 the digit in the thousands place comes from dividing 8 by 8.
64/8 is 8 so that is the digit in the thousands position. So you could have any one of numbers like xxxx8xxx where each x could be any digit, eg 11118111, 12348765, etc.
Depends on who you ask. If you ask an insurance company, they might say age, credit score, marital status.
A high percent error refers to?
A high percent error indicates that a certain value is very far from the accepted value. Percent error is the comparison of an estimated value to an exact one.
When would you use a box and whiskers plot?
To give a simple summary of quantitative data with 5 or more observations.
Any 2-dimensional graph - column/bar, line, scattergram will do the trick.
It is difficult, though not impossible, to show such a relationship with a series of pie charts.
What is the best definition for random sampling?
There are two equivalent definition.
Definition 1: A simple random sample is one for which each element has the same probability of being included in the sample.
Definition 2: A simple random sample is one where all sample of that size have the same probability of being selected.
Although the words are similar, the first refers to the selection of individuals from the population whereas the second refers to the samples.
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The odds of getting pregneat with a tuble?
There are many people called Tuble and the odds of getting pregnant with one depends on your relationship.
What can be expected after a normal exenteration?
It is normal for a patient to undergo a period of psychological adjustment to the major change in lifestyle (e.g., learning to care for a urostomy or colostomy) or appearance (e.g., following orbital exenteration).
Does the scale used on a bar chart does not affect the way the bar chart looks?
Technically, no. If you use a different scale the bars will change in size, but they change in proportion. Its like different sized shapes; if you make a square bigger, its still a square.
When you roll 4 dice What is the probability of getting a sum of 21?
It is 20/1296 = 0.01543 (approx).
